Sorrell, quoted in several media outlets, said: “This represents a significant step in building a new age, new era, digital agency platform for clients.

“MediaMonks’ roots are totally in new media, and data, content and technology. Our next moves will be to build this platform further and to add meaningful data analytics and digital media buying. The company will be a unitary one with MediaMonks as its core.”

Sorrell has taken the title of “senior monk”.

MediaMonks founder and chief operating officer, Wesley ter Haar, said: “With this merger we’re adding the firepower to build out our consolidated offering across creative, data, media and technology to best serve and service our clients.

“It’s a great statement that MediaMonks is the premium platform upon which Sir Martin Sorrell’s new business is founded. That to me is also a true testament to the quality of our team and talent.”